<style>
    table{
        border: 1px solid lightblue;
        height: 200px;
        width: 600px;
        margin: auto;
        
    }
    thead{
        text-align: center;
    }
    td{
        border: 1px solid lightblue;
        text-align: center;
    }
</style>
<table>
    <thead>
        <tr>
            <td>ID</td>
            <td>标题</td>
            <td>内容</td>
            @* <td></td>
            <td></td> *@
            <td colspan="3">操作</td>
        </tr>
    </thead>
    <tbody>
        <tr>
            <td>1</td>
            <td>22222</td>
            <td>33333</td>
            <td><button>编辑</button></td>
            <td><button>详情</button></td>
            <td><button>删除</button></td>
        </tr>
         <tr>
            <td>1</td>
            <td>22222</td>
            <td>33333</td>
            <td><button>编辑</button></td>
            <td><button>详情</button></td>
            <td><button>删除</button></td>
        </tr>
         <tr>
            <td>1</td>
            <td>22222</td>
            <td>33333</td>
            <td><button>编辑</button></td>
            <td><button>详情</button></td>
            <td><button>删除</button></td>
        </tr>
         <tr>
            <td>1</td>
            <td>22222</td>
            <td>33333</td>
            <td><button>编辑</button></td>
            <td><button>详情</button></td>
            <td><button>删除</button></td>
        </tr>
    </tbody>
</table>